. . . . . "Delaware River Iron Ship Building and Engine Works#ABCD ships" . . . . . "Roach's Shipyard" . . . . . . . . . . . . . . . . . . . . "Delaware River Iron Ship and Engine Works" . . . . . . . . . . . . "500" . . "Delaware River Iron Ship Building and Engine Works" . . . . . . . . "Delaware River Shipbuilding" . . . . "1871" . . . . . . . "Delaware River Iron Shipbuilding & Engine Works" . . . . . . "Delaware River Iron Ship Building and Engine Works" . . . . . . . . . . . . . .